在国际贸易中，付款同实际交货几乎不可能同时进行，这就构成了贸易中的矛盾，因为出口商喜欢在发货之前先得到付款，而进口商则喜欢在付款之前便控制货物。
【正确答案】：In international trade it is almost impossible to match payment with physical delivery of the goods1，which constitutes conflicting problems for trade, since the exporter prefers to get paid before releasing the goods and the importer prefers to gain control over the goods before paying the money.
【题目解析】：参见教材P151。